#!/bin/sh
for foo in a b c
do
 echo $foo
done

#them dau "" thi se bi coi nhu 1 chuoi => chi in ra 1 dong
for foo in "a b c"
do
 echo $foo
done

#!bin/sh
for f in $(ls -l); do
  lpr $f
done

exit 0


for tiep
#!bin/sh
for ((i=0; i<10; i++))
do
echo $((a + b + (14 * c)))
echo $i
done

echo test array
array=(a b c)
length=${#array[*]}
echo $length
for ((i=0; i<$length; i++))
do
echo ${array[i]}
done
Unix[0]='Debian'
Unix[1]='Red hat'
Unix[2]='Ubuntu'
Unix[3]='Suse'

echo ${Unix[1]}

exit 0